Wrench.



E. FOSTER.

WRENUH.

APPLICATION FILED NOV. 4, 1911.

Patented. May 28, 1912.

EVERET TE FOSTER, 0F WESSON, MISSISSIPPI.

WRENCH.

oeasao.

To all whom it may concern:

Be it known that I, EvERE'rTn FOSTER, a citizen of the United States,residing at Wesson, in the county of Copiah and State of Mississippi,have invented certain new and useful Improvements in Wrenches, of whichthe following is a specification, reference being had to theaccompanying drawings.

This invention relates to tools and more particularly to that class oftools that are called wrenches and are used for the purpose oftightening nuts on bolts, etc.

The object of this invention is to provide a wrench which can be readilyadjusted to fit the various sizes of nuts on which it is desired to usethe same.

A further object is to provide means for securely fastening the parts ofthe wrench rigidly together so that they will firmly clamp the nut inquestion.

Other objects of this invention will become apparent as it is more fullyset forth.

In the accompanying drawings which illustrates by way of example anembodiment of this invention, Figure 1 represents a view in elevation ofa wrench in open position, and embodying this invention. Fig. 2represents a view in elevation of the wrench in its closed position forholding a nut and with parts broken away to show the construction of thedevice.

Similar reference characters refer to similar parts throughout thedrawings.

In the construction, 1 represents the shank of the wrench which isprovided with a plurality of V-shaped teeth 2 in the front portionthereof, and with a handle 3 at its inner portion. A pair of plates 4Lhave each one of their outer corners 5 projecting and rounded as isclearly shown in the drawings and provided with holes 6 therein for thepurpose of receiving a rivet 7 or the like in order to hold an inner jaw8 of the wrench. The inner jaw 8 is provided with a hole 9 therein topermit the easy movement of a stem 10 attached to the outer jaw 11 ofthe wrench. A plurality of teeth 12 are provided on the inner portion ofthe stem and arranged to closely engage with the teeth 2 of the shank,when said stem is closed against-the shank 1.

Provided on the inner portion of the stem 10 is a journal member 13arranged to permit the rotation of a catch 14: therein, the catch 14being provided with enlarged heads Specification of Letters Patent.

Application filed November 4, 1911.

Patented May 28,1912. Serial No. 658,544.

15 and 16 for the purpose of engaging with the outer sides of the stemand shank and in the manner clearly shown in Fig. 2.. This catch isarranged to clamp said parts together sothat the wrench will be heldsecurely on the nut which its jaws engage with.

17 are rivets or other suitable fastening means for holding plates 4:securely to the shank 1. These plates are sufliciently separated topermit the easy movement of the stem 10 therein, and yet at the sametime provide a guiding means therefor.

When it is desired to use the wrench, the catch is undone and the innerportion of the stem drawn away from the shank and then pushed outwardlyso that the jaws of the wrench will be separated sufficiently apart toproperly engage with the nut or the like to be actuated. It will benoticed that the inner jaw being pivoted will move out slightly so as toprevent any binding action of the same on the stem. The stem 10 is thenmoved inwardly so that its teeth will engage with the teeth in the shank1 and thereby prevent any longitudinal movement of the stem and thusprevent the jaws loosening ofi the nut. The heads 15 and 16 of the catchbeing then moved inwardly to engage and lock the shank and the stemtogether will prevent any transverse movement of the same and furtherassist in holding the wrench securely on the nut.

The operation of the other parts of the device being clearly apparentfrom the drawings, it is not deemed necessary to describe them further,and obviously while there is "shown but one form of this invention inthe drawings, it is not necessary to limit this application for LettersPatent to that particular form, or in any other way otherwise thannecessitated by the prior art, as many modifications in the constructionthereof may be made without departing from the principles thereof, orcoming within the scope of the appended claim.

Having thus described this invention, What is claimed is A wrenchcomprising in combination a shank having its front portion provided withV-shaped teeth thereon, a plurality of plates rigidly secured to theouter portion of said shank, each of said plates having an outer cornerportion projecting outwardly therefrom and provided with a hole therein,an inner jaw having an end portion disposed in said projecting portions,stem for looking said stem and shank t0- means for pivotally holdingsaid jaw to gether, so that the teeth thereof will be held saidprojecting portions, said jaw being prointo engagement with each other.vided with a hole therein, an outer jaw, a In testimony whereof Ihereunto aflix my 5 stem, integrally secured to said outer jaw signaturein the presence of two witnesses. 15

and provided with a plurality of V-shaped teeth thereon arranged toengage with the EYERETTE FOSTER teeth of said shank, said stem being ar-Witnesses: ranged to actuate within the hole in said WM. H. FOSTER, 10inner jaw and means rotatably held on said H. S. LEE;

Copies 0! this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

, Washington, I). G.

